Solution 1: Install the new updater.acroplugin.

Right-click or control-click on the application and choose "Show Package Contents" from the context menu.

Open the "Contents" folder then open the "Plug-ins" folder.

Double-click the UpdaterPlugInWithFrameworkFix.dmg file which will mount a volume named Updater Plug-in With 317 Framework.

Copy new Updater.acroplugin folder from the mounted volume to the Plug-ins folder.

A message may pop up stating "A newer item named "Updater.acroplugin" already exists in this location. Do you want to replace it with the older one you are moving?" Click Replace to complete the installation.

Close the window "Plug-ins" Window.

Start Acrobat or Adobe Reader.

Solution 2: Disable the Updater.acroplugin in Acrobat or Adobe Reader.

Navigate to where Acrobat or Adobe Reader is installed on your computer.

Select the application icon and select File > Get Info from the Finder menu.

Under the Plug-ins section, scroll down to Updater.acroplugin and un-check the checkbox .